When the content of coal fly ash in compound soils amounted to 40%, some physiological functions of cotton plant were restrained.
复合土中粉煤灰含量达40%时，棉花植株一些生理功能被抑制。
When the content of coal fly ash in compound soils amounted to 40%, some physiological functions of cotton plant were restrained.
复合土中粉煤灰含量达40%时，棉花植株一些生理功能被抑制。
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